/* happ.xin — "Aurora dark" palette. Distinct from lundivo (light indigo) and happ.bar (mono near-black). */
:root{
  --bg:#0a0f1c; --surface:#111a2e; --surface2:#182240; --card:#131d33;
  --ink:#eaf0ff; --muted:#93a0c0; --line:rgba(255,255,255,.09); --line2:rgba(255,255,255,.14);
  --brand:#22d3ee; --brand2:#34d399; --accent:#fb7185;
  --grad:linear-gradient(120deg,#22d3ee 0%,#34d399 100%);
  --grad-soft:linear-gradient(120deg,rgba(34,211,238,.16),rgba(52,211,153,.16));
  --shadow:0 8px 30px rgba(0,0,0,.35); --shadow-lg:0 20px 60px rgba(0,0,0,.5);
  --r:16px; --wrap:1140px; --navh:66px;
}
[data-theme="light"]{
  --bg:#f6f8fd; --surface:#ffffff; --surface2:#eef2fb; --card:#ffffff;
  --ink:#0e1524; --muted:#5a6885; --line:rgba(12,20,40,.10); --line2:rgba(12,20,40,.16);
  --brand:#0891b2; --brand2:#059669; --accent:#e11d63;
  --grad:linear-gradient(120deg,#0891b2 0%,#059669 100%);
  --grad-soft:linear-gradient(120deg,rgba(8,145,178,.10),rgba(5,150,105,.10));
  --shadow:0 8px 30px rgba(20,30,60,.10); --shadow-lg:0 20px 60px rgba(20,30,60,.16);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--navh) + 12px)}
body{background:var(--bg);color:var(--ink);font-family:'Inter',system-ui,-apple-system,sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased;padding-top:var(--navh);overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(30px,5vw,50px)}
h2{font-size:clamp(24px,3.4vw,36px)}
h3{font-size:19px;font-weight:700}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
p{color:var(--muted)}
section{padding:64px 0}
.sec-head{margin-bottom:34px;max-width:720px}
.kicker{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:12px}
.lead{font-size:19px;color:var(--muted);margin-top:16px;max-width:680px}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;height:var(--navh);z-index:1000;
  background:var(--surface);
  background:color-mix(in srgb,var(--surface) 86%,transparent);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:saturate(150%) blur(14px);backdrop-filter:saturate(150%) blur(14px)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em}
.logo .mark{width:32px;height:32px;border-radius:9px;background:var(--grad);display:grid;place-items:center;
  color:#04121a;font-weight:900;font-size:17px;box-shadow:0 4px 14px rgba(34,211,238,.35)}
.nav-links{display:flex;gap:26px;margin-left:14px}
.nav-links a{font-size:15px;color:var(--muted);font-weight:500;transition:color .15s}
.nav-links a:hover{color:var(--ink)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.ttoggle{width:38px;height:38px;border-radius:10px;border:1px solid var(--line2);background:transparent;
  color:var(--ink);cursor:pointer;font-size:16px;display:grid;place-items:center}
.burger{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line2);
  background:transparent;color:var(--ink);cursor:pointer;font-size:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;
  padding:11px 20px;border-radius:11px;cursor:pointer;border:1px solid transparent;transition:transform .12s,box-shadow .15s,background .15s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad);color:#04121a;box-shadow:0 6px 20px rgba(34,211,238,.3);font-weight:700}
.btn-primary:hover{box-shadow:0 10px 28px rgba(34,211,238,.45)}
.btn-ghost{background:var(--surface2);color:var(--ink);border:1px solid var(--line2)}
.btn-ghost:hover{border-color:var(--brand)}
.btn-lg{padding:15px 30px;font-size:16px}
.short{display:none}

/* drawer */
.drawer{position:fixed;top:var(--navh);left:0;right:0;background:var(--surface);border-bottom:1px solid var(--line);
  transform:translateY(-120%);transition:transform .25s;z-index:999;padding:12px 22px}
.drawer.open{transform:translateY(0)}
.drawer a{display:block;padding:12px 4px;color:var(--ink);border-bottom:1px solid var(--line);font-weight:500}
.drawer a:last-child{border-bottom:none}

/* hero */
.hero{padding:56px 0 44px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(700px 380px at 78% 8%,rgba(34,211,238,.14),transparent 60%),
             radial-gradient(600px 360px at 12% 30%,rgba(52,211,153,.12),transparent 60%)}
.hero .wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero p.lead{margin-bottom:26px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.tag{font-size:13px;color:var(--muted);background:var(--surface2);border:1px solid var(--line);
  padding:7px 13px;border-radius:999px}
/* device mock */
.mock{position:relative;background:var(--card);border:1px solid var(--line2);border-radius:20px;
  padding:22px;box-shadow:var(--shadow-lg)}
.mock::before{content:"";position:absolute;inset:0;pointer-events:none;border-radius:20px;
  background:var(--grad-soft)}
.mock-row{position:relative;display:flex;align-items:center;gap:12px;padding:13px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);margin-bottom:11px}
.mock-row:last-child{margin-bottom:0}
.dot{width:10px;height:10px;border-radius:50%;background:var(--brand2);box-shadow:0 0 10px var(--brand2)}
.mock-row b{font-size:14px}
.mock-row span{margin-left:auto;font-size:13px;color:var(--muted)}
.bar{height:7px;border-radius:99px;background:var(--surface2);overflow:hidden;position:relative}
.bar i{position:absolute;left:0;top:0;bottom:0;width:72%;background:var(--grad);border-radius:99px}

/* trust strip */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.trust .t{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;text-align:center}
.trust .t b{display:block;font-size:26px;font-weight:800}
.trust .t span{font-size:13px;color:var(--muted)}

/* generic grids/cards */
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:transform .15s,border-color .15s,box-shadow .15s}
a.card{display:block;color:inherit}
a.card:hover,.card:has(a):hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--line2)}
.card h3{margin-bottom:8px}
.card p{font-size:15px}
.card .ico{width:44px;height:44px;border-radius:11px;background:var(--grad-soft);border:1px solid var(--line2);
  display:grid;place-items:center;font-size:20px;margin-bottom:14px}

/* platform cards */
.plats{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;overflow-x:clip}
a.plat{display:flex;flex-direction:column;gap:6px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:22px;transition:transform .15s,border-color .15s,box-shadow .15s}
a.plat:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand)}
a.plat .ico{font-size:26px;margin-bottom:6px}
a.plat b{font-size:16px}
a.plat small{color:var(--muted);font-size:13px}
a.plat .btn{margin-top:14px;width:100%}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;counter-reset:s;overflow-x:clip}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:20px;right:22px;
  font-size:34px;font-weight:800;color:var(--line2)}
.step b{display:block;font-size:16px;margin-bottom:8px}
.step p{font-size:15px}

/* tariffs */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;overflow-x:clip}
.plan{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;position:relative}
.plan.feat{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),var(--shadow)}
.plan .badge{position:absolute;top:-11px;left:26px;background:var(--grad);color:#04121a;font-size:12px;
  font-weight:700;padding:4px 12px;border-radius:999px}
.plan .price{font-size:34px;font-weight:800;margin:6px 0}
.plan .price small{font-size:15px;color:var(--muted);font-weight:500}
.plan ul{list-style:none;margin:16px 0;display:flex;flex-direction:column;gap:9px}
.plan li{font-size:14px;color:var(--muted);padding-left:24px;position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--brand2);font-weight:800}
.plan .btn{width:100%;margin-top:6px}

/* prose + keychips */
.prose{max-width:760px}
.prose p{margin-bottom:16px;color:var(--muted)}
.prose h2{margin:32px 0 14px;color:var(--ink)}
.prose a{color:var(--brand);border-bottom:1px solid var(--line2)}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin:8px 0 4px}
.chip{font-size:13px;color:var(--muted);background:var(--surface2);border:1px solid var(--line);
  padding:6px 12px;border-radius:999px}

/* faq */
.faq{display:flex;flex-direction:column;gap:12px;max-width:820px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px 20px}
.faq summary{cursor:pointer;font-weight:600;padding:16px 0;list-style:none;position:relative;padding-right:34px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:14px;font-size:22px;color:var(--brand);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 18px;font-size:15px}

/* cta banner */
.cta-banner{position:relative;background:var(--grad);border-radius:24px;padding:52px 40px;text-align:center;overflow:hidden}
.cta-banner h2{color:#04121a;margin-bottom:12px}
.cta-banner p{color:#053b33;font-weight:500;margin-bottom:24px;opacity:.9}
.cta-banner .btn-ghost{background:#04121a;color:#eaf0ff;border-color:transparent}

/* footer */
footer{background:var(--surface);border-top:1px solid var(--line);padding:52px 0 30px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px;margin-bottom:34px}
.foot-office{font-size:14px;color:var(--muted);margin-top:14px}
footer h4{font-size:14px;margin-bottom:14px}
footer a{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:color .15s}
footer a:hover{color:var(--ink)}
.foot-bot{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.crumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--brand)}

@media(max-width:900px){
  .nav{background:var(--surface);-webkit-backdrop-filter:none;backdrop-filter:none}
  .nav-links{display:none}
  .burger{display:grid;place-items:center}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .mock{order:-1}
  .trust{grid-template-columns:repeat(2,1fr)}
  .g3,.g2{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .nav-right .btn-primary .full{display:none}
  .nav-right .btn-primary .short{display:inline}
  .foot-grid{grid-template-columns:1fr}
  section{padding:48px 0}
}